Improvement in expanding muff-blocks



esta.

CHARLES EUTTEEWOETH, oE TEoY. NEW YORK.'

f Letters Patent No. 98,025, dated December 21, `1869.

`iMPRoirnwnzvfr 1N EXPANDING Murr-BLOCKS.:

The Schedule refexred to in these Letters Patent and making part of the same.

To all whom 'it may concern: 4

e it known that d, GHAnLEs F. BUTTERWORTH,

` ot' Troy, in the county of Rensselaer, and Stateof New York, hai-'eiuventeda new 'and useful Improvement in Extension Muff-Block; and I do hereby declare that the following a full, clear, and exact description thereof, which will enable others skilled in the artto: make and usethe same, reference being 'had to the accompanying drawings, forming part of this specilicatiom rlhis invention relates to a newand useful improvenient in blocks for forming and stretching muffe, in

. the process of manufacturing that article.

In the accompanying" drawiuge-` t, liigure 1 representen. longitudinal view of the block i partly in. section.

Figure 2 is an end vie-w. Similar letters ofA .reference denote corresponding `parts.`

-A is the main portionlof the block, to which the screw-redis attached, sothat it may freelyrevol\'e, but

` square, so that it may he` revolved by means of the have no longitudinal inotiou.`

B is the movable or adjustable portion ofthe block, throigh `which the scre- \\"rod passes, and which bears the nut whichengages with the `screw-rod.

l G represents the screw-rod. This screw-rod passes entirely through both parts ofthe block, withits ends key D.

Y E is'the screw-nubi.which is secured inthe end of l the part .13, as seen iu the drawing.

of the collar F andthe plate G.

The block is in form a cylinder, `and the part A is hollowcd out to receive `part B, as seen in the drawing, so that v,when t-ho part- B `is `extended by turning The screw-'rod C is secured in the part `A by means the screw, it willmove outward on aline corresponding with the'surface of A.

One or more dowel-pins may be employed, for preserving a luniform position for the parts, as. seen at h. A baud may also be employed to cover the joint between the two` parts, as seen at i. This band "may be let. into the parts, so `that the block will presenta smooth land eren surface. y

It will be seen that when the fur skin is sewed up to secure the desired diameter furthe muff, and the block iuserted,'and the muff nailed to the ends thereof,

the block may be elongated aud-the mu" stretchedto vany desired degree ot' tension, by simply turning the screw.

' Strips or pieces of wood may be attached to the parts of the block, forincreasing its diameter.

By the use of this block the operation of forming the mufi, so as to utilize all the` fur skin, is rendered perfectly easy.

` Having thus `described my invention,

CHARLES E. EUTTEEWOETH.

l `Witnessesz GEO. W. MABEE, ALEX. F. ROBERTS. 

